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@uiten gta-trs gettati @ffice STEPHI'BUYNITZKY', OF ST. PETERSBURG, RUSSIA.

Letters Patent No. 79,310,1ated June 30, 1868.

IMPROVEMENT IN 'wssuoILERs-- TO ALL WHOM IT MAY CONCE'RNL. y

. Be it known that I, STEPHEN'BUYN-ITZKY, of St. Petersburg, in the Empire ofARuss-a, have invented a new and useful Improvementin Wash-Boilers; and I'do hereby declare the following to be a full, clear, and exact description of the same, reference beinghad'to the accompanying drawings, in which- Figure 1 represents my invention'detaehed from the boiler.

Figure 2 is a vertical vlongitudinal section through a .wash-boiler, with my invention attached, theA whole being in operation;

Y My invention consists in-a plate, or its equivalent, to -be placed .ivithin the boiler, and upon the clothes con'tainedtherein, andconstructed so that,.as the clothes are raseduipA by the accumulation of steam within their folds, said platewill be raised up with the clothes, andv will raise thevcover from the sjdesof the boiler, so as to admit a current of cold air to enter.

lhe advantages Securedare, rst, to make the boiling uniform throughout tli'e boiler; second, to cause a more-thorough penetration of the fabrics by the boiling suds; third, to eifectually prevent thelfboililng over" of the waterwithin the boiler.v 1

That others may` fully understand my invention, I will particularly describe it. t

A is a common wash-boiler,l with a cover, B, fitted with an internally-projecting flange yin the usual way.

C is a plate of metal, ci' other suitable material, corresponding in shape tothe horizontal section of thc boiler, but ofE such comparative size that when in place within the boiler, a space of from 'one-half of one inch to one inch will exist between the edge of said plate and the side of the boiler all around. Incrder to secure suiicient'stiil'ness ofthe plate C, to enable it totvithstand .the amountof handling tou'hich it willbe subjected, I make it with a surrounding Bange when it is constructed of metal, and foundto be necessary to attain the end' specified. If the plate should be other material'n'hich may be light and stiil`,vthe flangeA may be dispensed w ever, that the top surfaceof the plate C should b e made concave, and the bottom surface correspondingly convex, so that the boilingwater rising below maybe deile'cted towards the sides, andas it passes over the edgeand uponthe top of plate C, it may then vrun down tothe centre thereof, and descend through the orifices D to the lower part of the boileri I think, however," that no material change in the operation of my invention occurs when the position ofmy plate is reversed and the convex side is placeduppermost, so `that the streams ascend through the orifices D, or their equivalents, and again descend over the edges of theplate.

The guides E'E are prefeialily made of nood, and are inserted through loops F F, soldered to the edge of the plate C. The guides E are ofsuliicient length, and fit against the sides of the boiler with sulicent accuracy tocause'the plate to rise or fall uniformly at'all points of its' surfac'e," and their lowerends are bevellcd, as shown, so that when the plate is placedin position, the lower ends ofthe guides will pass easily down between the clothes and the sides of the boiler.l

The mode of operation is as follci'vs: When energetic boiling begins in the wash-boiler, as ordinarily used, the steamgenerated is more or less confined by the clothing in the boilei-,and is thereby caused to rise up, until the boiler is full and the streams of Water are enabled to pass over the side of the boiler. If, however,- the cover B is raised s'o as to admit a stream of cool sir to the surface of the. boiling mass, the energy of the ebullition will be so far checked as to prevent the boiling over of the water. Hence it is a common practice' to remove the cover as soon as any boiling over has occurred.

-With my invention all necessity for watchfulness onthe part of the attendu apparatus self-acting to theextent of removing the cover' whenl the boiling such cthercorrugations as may be made of vthick metal, orof wood or nt is obviated by makingt my has become very energetic, and this is accomplished as follorvs: When the water begins to boil it is forcedupwardby the steam confined among the folds ofthe clothes, and beingdeected, passes over the surface of the plate and descends again, to be returned in the same manner, there being always descending streams to supply the place of theascendin ith. `I think it advantageous, vhow-l g ones, and in my apparatus these'streamsare in a measure divided; and thereforev they act more rapidiy and eijciently, but the accumulation of steal will increase, and the mass of the clothes will be expanded as the ebullition increases in intensity, and the plate C will thereby be raised up and lthe upper ends of the guides E E will come in contact with the cover B, and raise that up also, and as soon as the said cover has been raised sufficiently to admit a current of cold air to the surfac'e of the boiling water, the energy of bullition will be checked and the plate C will rise no further.

If it 4is desired that the clothes should be sxbjeeted to energetic boiling for a longer time, the attendant' may, with the hand, depress the cover and plate to their original position, and the same phenomena will again take place.

I am. aware of the patent granted` to M. W. Staples, and do not claini any such device, the cover in that case being secured so that it cannot be `raised by the raising of the clothes as the boilingprogresses.

It is evident that the construction of my invention may be changed very greatly-without impairing the principles of its operation,l as, for instance, if a grate be employed instead of a continuous plate, and I'there fore do not wish to conline myself to the exact details of' construction shown and hereindeseribed.

Having described rny invention, what I claim as new,v is

A loseplate, C, provided with the guides E, or their equivalents, substantially as described, to be placed on the top of the clothes in the wash-boiler, for the purposes'set-fortl1.

i STEPHEN BUYNITZKY.

Witnesses:

R. S. TURNER,

O. SMITH. 

